/Engine/Source/Runtime/Engine/Public/kDOP.h
Determines if the node is a leaf or not. If it is not a leaf, it subdivides the list of triangles again adding two child nodes and splitting them on the mean (splatter method). Otherwise it sets up the triangle information.
bounding box for this node
FBox SplitTriangleList ( int32 Start, int32 NumTris, [TArray](API\Runtime\Core\Containers\TArray)< [FkDOPBuildCollisionTriangle](API\Runtime\Engine\FkDOPBuildCollisionTriangle)< KDOP_IDX_TYPE > > & BuildTriangles, [TChunkedArray](API\Runtime\Core\Containers\TChunkedArray)< [FTriangleSOA](API\Runtime\Engine\FTriangleSOA) > & SOATriangles, [TChunkedArray](API\Runtime\Core\Containers\TChunkedArray)< [NodeType](API\Runtime\Engine\TkDOPNode\NodeType) > & Nodes )